The Excalibur Bi-Retrograde Calendar by Roger Dubuis

This year, Roger Dubuis celebrates its 30th anniversary, and for the occasion, the company pays tribute to its co-founder’s favourite complication: the bi-retrograde display.

This function, previously featured in the Excalibur Grande Complication alongside a dozen other highly complex mechanisms, takes centre stage once again. The Maison has also introduced a less complicated, more classic edition to further honour the bi-retrograde display.

Also referred to as “the ecliptic counters” by the Maison a nod to their elliptical shape and distinctive role in indicating the months and date the design showcases a symmetrical dial layout. Enhanced by refined detailing, it pays homage to the Maison’s early creations from 1996.

Glossary

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Glossary
Hammer

Hammer

Is a small component within a watch movement that strikes a gong to produce a specific tone. Its function is to provide a precise strike on the gong to create a clear and distinctive sound.

Typically made of steel, the hammer is connected to the striking mechanism within the watch. When activated, the hammer moves back and forth, striking the gong, resulting in a musical tone or a specific sound. The movement of the hammer is carefully studied to ensure accurate and consistent striking of the gong.

Note: Not all watches contain a hammer. It is primarily found in watches with striking complications such as minute repeaters or alarm functions.